Dynamic array declaration

[kathyayini]

i am trying to declare array dynamixcally :
DWORD dwThreadId[IThreads];
IThreads is of int type.
But it is giving the error as follows : C:\Windows\Desktop\Copy (2) of Storedprocedure\StoredProcedure.cpp(31) : error C2057: expected constant expression
C:\Windows\Desktop\Copy (2) of Storedprocedure\StoredProcedure.cpp(31) : error C2466: cannot allocate an array of constant size 0
C:\Windows\Desktop\Copy (2) of Storedprocedure\StoredProcedure.cpp(31) : error C2133: 'dwThreadId' : unknown size
waiting for the reply

 

[qednick]

The best and easiest way to declare a dynamic array is to use the VC++ CArray class.

// Add the following #include statement
// to all class header files that use CArray
#include <afxtempl.h>

// In your code, wherever you want to use a
// CArray, declare as follows:
CArray<int,int> myArrayOfInts;

// You can change the 'int' data type for any type
// you want including CString,float,etc. and even
// your own data structures

// It's usually a good idea to set the size of the
// array before you start sticking things into it
myArrayOfInts.SetSize(0,0);

// You can add items to the array easily:
myArrayOfInts.Add(12345);

// When you add items to the array, the array
// will automatically allocate an extra space
// for the new item

// You can find the number of items contained
// in your array:
int arraySize = myArrayOfInts.GetSize();

// Use a typecast to retrieve the information
// from an array element
int someMember = (int)myArrayOfInts.GetAt(0);

// You can remove an element from the array
// by using it's zero-based index
myArrayOfInts.RemoveAt(0);

// Alternatively, you can remove all elements
// in the array:
myArrayOfInts.RemoveAll();

Hope this helps

 

[kathyayini]

the code which have given helped me.

Thank you